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fix overflow expression for number of pages in sequence interface #144

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Sep 26, 2025
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fix overflow expression for number of pages in sequence interface #144

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3 changes: 2 additions & 1 deletion tensorrt_llm/_torch/auto_deploy/custom_ops/attention_interface.py
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Original file line number Diff line number Diff line change
Expand Up @@ -136,7 +136,8 @@ def __init__(
self._num_pages = max(
self.max_batch_size,
(self.max_num_tokens) // self.page_size # floored number of pages
+ (self.max_num_tokens % self.page_size > 0) * self.max_batch_size, # +1 per sequence
+ (self.max_num_tokens / self.max_batch_size % self.page_size > 0) # check for overflow
* self.max_batch_size, # +1 page per sequence if overflow is required
)
# sanity check
assert self.num_pages >= self.max_batch_size, "num_pages can't be less than max_batch_size"
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